Cleaning up event constructors

tools/dom/src/shared_FactoryProviders.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 part of html;
 
-class _CustomEventFactoryProvider {
-  static CustomEvent createCustomEvent(String type, [bool canBubble = true,
-      bool cancelable = true, Object detail = null]) {
-    final CustomEvent e = document.$dom_createEvent("CustomEvent");
-    e.$dom_initCustomEvent(type, canBubble, cancelable, detail);
-    return e;
-  }
-}
-
-class _EventFactoryProvider {
-  static Event createEvent(String type, [bool canBubble = true,
-      bool cancelable = true]) {
-    final Event e = document.$dom_createEvent("Event");
-    e.$dom_initEvent(type, canBubble, cancelable);
-    return e;
-  }
-}
-
-class _MouseEventFactoryProvider {
-  static MouseEvent createMouseEvent(String type, Window view, int detail,
-      int screenX, int screenY, int clientX, int clientY, int button,
-      [bool canBubble = true, bool cancelable = true, bool ctrlKey = false,
-      bool altKey = false, bool shiftKey = false, bool metaKey = false,
-      EventTarget relatedTarget = null]) {
-    final e = document.$dom_createEvent("MouseEvent");
-    e.$dom_initMouseEvent(type, canBubble, cancelable, view, detail,
-        screenX, screenY, clientX, clientY, ctrlKey, altKey, shiftKey, metaKey,
-        button, relatedTarget);
-    return e;
-  }
-}
-
 class _CssStyleDeclarationFactoryProvider {
   static CssStyleDeclaration createCssStyleDeclaration_css(String css) {
     final style = new Element.tag('div').style;
     style.cssText = css;
     return style;
   }
 
   static CssStyleDeclaration createCssStyleDeclaration() {
     return new CssStyleDeclaration.css('');
   }
@@ skipping 26 matching lines @@
     final fragment = new DocumentFragment();
     final e = new svg.SvgSvgElement();
     e.innerHtml = svgContent;
 
     // Copy list first since we don't want liveness during iteration.
     final List nodes = new List.from(e.nodes);
     fragment.nodes.addAll(nodes);
     return fragment;
   }
 }